Honda’s big-block VTEC engine from the 90s, the H22A, offered greater torque and horsepower from the factory compared to its smaller B-Series relatives. Get even more out of your H-Series engine with help from Full-Race! Add boost with a Full-Race twin-scroll turbo manifold flanged for a BorgWarner EFR turbocharger, then add a Full-Race intercooler to keep the intake temperatures down. Make sure you get all the power to the ground with Full-Race’s traction bar system. Full-Race also offers a variety of ancillary solutions from TiAL Sport wastegates to CSF radiators. Contact your performance specialists at Full-Race for more details!
Making more power can be accomplished in several ways, one of which is to increase the displacement of the engine. In the late 90s, when many sought the affordable B16A and B18C engines for swaps, some turned to the big block of Honda VTEC engines, the H22A from the Honda Prelude. The H-Series, offered the greatest displacement available at the time and was a popular engine swap alternative to the B-Series engines. This 2.2-liter engine shared nothing in common with its B-Series brethren and cost much more to buy and build since engine quantities and aftermarket development were both limited.
Why Go Bigger?
Before power adding solutions such as turbochargers, superchargers and nitrous oxide injection became more mainstream, there really was no replacement for displacement. In this instance, more output could be had with a larger engine. Although capable, the B16 and B18 engines and the aftermarket components of the time could not compare to the sheer displacement that a 2.2-liter H22A engine could deliver. With an 87mm bore and a 90.7mm stroke, the H22A displaced 27-percent more than a B16 and 19-percent more than a B18. This size difference yielded noticeably greater torque and horsepower output, which gave an obvious performance advantage. For those seeking the greatest displacement advantage, the non-VTEC H23 engine shared the same basic dimensions but with a longer 95mm stroke. Ambitious builders adapted the H22A VTEC cylinder head to the H23 blocks for maximum displacement. Honda did offer an H23A VTEC engine in very small quantities in the JDM-only 1998-2002 Honda Accord Wagon SiR and AWD, but acquiring this engine would have been cost prohibitive to most enthusiasts.